B&M 20260 SHIFT IMPROVER KIT - Manual (Page 6)

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pan. The drain plug kit will help elimi-
nate the mess when changing trans-
mission oil. Install pan and new gasket
and torque bolts 8-10 lb.ft (11-13.6
Nm).
STEP 17. Add 4 quarts of fresh ATF.
Dexron II is fine for Heavy Duty Level
applications however, we recommend
B&M Trick Shift ATF for Street and
Competition Levels for firm positive
shifts and improved transmission life.
With the vehicles wheels still off the
ground, start the engine and shift trans-
mission through all gears. Place selec-
tor in neutral and check the fluid level.
It should be between the Add and Full
marks. Do not overfill !! This can
cause foaming and overheating. Stop
engine and lower vehicle.
STEP 18. Drive vehicle several miles to
warm up the transmission. Park on
level surface and check ATF level. It
should be between Add and Full.
PARTS LIST
If you are missing any of the parts
shown below, do not proceed. Con-
tact your B&M dealer. Don’t forget to
purchase about 5 quarts of ATF (See
Step 17).
TROUBLE SHOOTING GUIDE
Malfunction Probable Cause
Slips Valve body bolts loose.
Low fluid level.
Overheating Insufficient cooler capacity
clogged lines or cooler.
Foaming oil at dipstick Fluid level too high.
or breather Clogged lines or cooler.
Erratic shifting Vacuum line cracked or leaking.
Shifter not properly adjusted.
Kickdown switch not properly adjusted.
Low fluid level.
High fluid level.
Valve body bolts loose.
Kickdown solenoid loose.
Late hard shifts Vacuum line cracked or leaking.
Kickdown solenoid loose or damaged.
Kickdown solenoid gasket damaged.
Will not shift Kickdown solenoid loose or damaged.
Governor tubes not properly installed.
Pump buzz or whine Low fluid level.
High fluid level.
Cut, damaged or missing pick-up tube O-rings.
Figure 14
1 20260 Instructions
1 Seperator Plate
1 Oil Pan Gasket
1 Solenoid Gasket
1 5/32" Drill Bit
1 3/16" Drill Bit
1 Separator Plate/Case Gasket
1 Valve Body/Case Gasket
2 Filter Pick Up Tube O-Ring
Install two furnished O-rings on
pickup tube. Lubricate throughly
with oil before installation.
TOOL LIST
1 3/8" drive ratchet or speed
handle
1 1/2" socket, 3/8" drive
1 7/16" socket, 3/8" drive
1 Small flat screwdriver
1 Small Internal Snap Ring Pliers
1 Small Hammer
1 Torque Wrench 0-10 lb.ft. (0-
13.6 Nm)
1 1/4" Drill Motor
1 Vise